Change getProperty -> prefs.get* within CordovaActivity
Convert usages of Config.* to use the non-static versions
Provide CordovaPlugin with CordovaPreferences. Add new Plugin.initialize()

This adds CordovaPlugin.initialize() (no args) and deprecates
CordovaPlugin.initialize(app, webView). This will allow us to refactor
more easily by using the package-private privateInitialize() to set
fields.
Merge branch 'master' into 4.0.x (remove Config.* references)

Conflicts:
	framework/src/org/apache/cordova/CordovaActivity.java
	framework/src/org/apache/cordova/CordovaChromeClient.java
	framework/src/org/apache/cordova/CordovaWebView.java
Delete deprecated methods from PluginManager